Mechanical magazine pencil



lan. 9, 1940. D. KAHN MECHANICAL MAGAZINE PENCIL Filed July 25, 1936 \`\\\`r\ lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll l.'

Patented Jan. 9, A1940 l UNrrED STATES PATENT oFFlC MECHANICAL MAGAZINE PENCILy Davia Kahn, wooallff, N. J.,` assignor to David Kahn, Inc., North Bergen Township, Hudson County, N. J., a corporationA of New Jersey I n Application July 25, 1936, seriai Np. 192326,

21 Claims.

This invention relates to mechanical pencils of the type wherein a lead may be protracted from and retracted into the point or tip of the pencil.

More particularly, the kinvention relates to improvements in the pencils disclosed in the appli-l cations of David' Kahn filed;` respectively, on August 20, 1935, and September 24, 1938, bearing respective Serial Numbers `37,0%;9 and 231,584.

In pencils of this character, as shown in the application bearing the Serial No. 3?;089', above referred to, provision is sometimes made for stor-r ing long leads in an annular space provided between the barrel and the working mechanismby which the lead is protracted and retracted. Heretofore, the upper and lower parts of such barrels have been made of like materialsuch as metal, Celluloid or a suitable condensation or other plastic material, the entire barrel being opaquev so that the enclosed leads could not be observed.y

factored, it has been customary to form they vtip of metal and `rlt it into the barrel. For reasons of construction and operation, it is desirable that an annular space be left within the upper part of the tip around the operative mechanism. In such pencils the lower ends of the stored leads rest on a narrow ledge formed bythe upper end of the metal tip and small pieces of such leads are apt to break ofi, drop into `this annular space and jam or choke the operative mechanism.

Itis a second important object of this invention to provide a lead supporting ledge for the upper end of the annular space of the tip member, said ledge being s'o arranged that the leads may rest thereon'without possibility of fbroken portions dropping intothe said space.

A third importantobject of the invention is to' provide a lead moving mechanism having a novel 'arrangement-of actuating means fitted on the rear end of said `lead moving mechanism.

f A fourth important object of the invention is to provide a novel arrangement of closure tted mal portions of the upper and lower tions in separated positions;

(o1. 12o-1s) provide a pencil of this character which may be separated into upper and lower sections for the `I removal of a lead and loading with leads without removal of such closure means. y 1

A sixth important object of the invention is to provide a reinforcing and anti-chipping ferrul forl the joint of the barrel of such pencils.

With the above and other objectsv Ain View.. as will be presently apparent, the invention consists in general of certain novel details of construction andv combinations of parts hereinafterfully described,` illustrated Iin the accompanyingy drawing and particularly pointed out inthe claims.

vInv .the accompanying vdrawing like.' characters ofv reference indicate like parts'in-'the several views,'a`nd- 4 f Figure 1 is a longitudinal section taken diametrically through a pencil constructed" accordance withthis invention; y I

Figure 2 isy asimilar section showingfthe lower end of the pencil to an enlarged scale and with certain ofthe working parts in somewhat difv.ferent positionsfrom the showingin Figure 1;

Figure 3 is af section on the line 3'-'3of Figure 2; Figure 4 is asection on they lined- 4 vof'l'igure`2;

Figure 5 is ure 2: Figure 6 is a side elevation of a removable rub'- a section onthe line l5'-l5' of'Figrel j Figure 7 isa fragmentary view showing proxi-A barrel secthe closure means for the upper end of the bar- Figure 8 is aplan View of the magazine tube to an enlargedscale; and

Figure 9 vis a -s'ide elevation thereof partly broken away. f i i f In theembo'diment ofthe invention here shown there is providedaa lower shell section Il! which may be formed of any desired material and, while `it isxprefer'able that the section l0 be formed'of some plastic or moldable material; such as Celluloid, a phenol condensation product," pyrxylin, cellulose acetate or other such material', thi'sma- `terial may also be'of metallicv nature. Fixedly tted in the lupper end of this lower sectionfl is a ferrule H preferably of metal, and this ferrule vis fitted infthe section I Il in such manner" that the ferruleand section l0 preferablyfform a unitary structure. The manner of itting` thev ferrule in place is optionable vso long as the attachment substantially permanent.y This ferberfholder` used herewith and forming part'vof l rule projects above the section I 0 and is provided externally with a rib or flange I2 which iits tightly on the upper edge of the section I0. Above this the ferrule is provided with external threads i3 on which is removably screwed the upper section I4 of the tubular barrel. This upper section is made of some material which is either transparent or translucent enough to show the interior of the upper part of the barrel. Obviously, this arrangement of a lower opaque part and an upper translucent part may be reversed or, for the purposes of this invention, both parts may be of the transparent or translucent character above met forth.

In the lower end of the member I0 .is screwed,

preferably by a left hand screw, the tubular neck I5 of a conical tip I6. Thus this tubular neck provides a shoulder Il' just above the lower end of the lower section I0.

The operative mechanism is somewhat similar to the corresponding mechanisms in the patents above referred to. That is, there is provided a runner tube I7' which is xedly-secured in the tip I El by any suitable means, as by a tapered end I3, and this runner tube is provided throughout its length with a longitudinal slot I9. Exteriorly, of this runner tube is mounted an actuating tube 29 having a spiral groove or slot 2I formedtherein. Ontop of the shoulder I'I is a washer 2f! which fits externally closely Within the barrel section I0 and internally around the actuating tube 2U so that the space 23 within the neck I5, between said neck and the tube II, is tightly closed. This Washer, as will be presently explained, supports the lower ends of the leads and prevents particles therefrom entering the space 23. Slidable within 'the runner tube I1' vis a lead carrier tube 24 wherefrom projects lug means 25 engaging in the actuating tube 2!! so that, as the tube 20 is rotated in one direction or the other, the lead L is projected from or retracted into the tip I6. Within the tube 24 Is a rod 2G constituting an expeller element and this rod bears against the upper end of the lead L and is provided with a lug 21 which projects through a slot 28 formed `in the tube I1 and enters the slot 2I normally at the distance of one pitch of the spiral slot above the engagement or the lug 25 therein. The upper end of the tube 24 is expanded, as at 29, to fit over and yhold a washer 30 below which is an antifriction washer 3l which engages the upperend of the spirally slotted actuating tube and holds it from longitudinal movement on the runner tube.

Fitted over the spiral actuating tube is a magazine tube 32 which is preferably split as at 33 for convenience of manufacture, and is provided with ribs 34, tapering at their lower ends as at 34. This tube, when the parts are assembled, .fits closely within the ferrule I I but, as shown in Figure 3, has its ribs somewhat spaced from the barrel above and below this ferrule.

On the upper end of the tube I1' there is provided a slight boss 35 which engages in an opening 36 formed in the lower part of an operating tube 3l provided with an enlarged upper end 38 adapted to receive a rubber or eraser 39. This member forms part of the closure means at the upper end of the barrel. The remainder of such closure means is formed by a sleeve 4U screwed into the upper end of the barrel and which ts rather closely on the part 38. A cap is tted frictionally and removably on the 'exterior of the part 38.

As shown in Figure 7, when the vbarrel sections Ill and I4 are unscrewed the reserve leads L are exposed. Upon removal of the cap, these sections may be separated and the section I4 drawn off of the leads se that the latter may be removed. Otherwise, the pencil operates by turning the cap 5 to project or retract the lead L as in former pencils.

It is to be observed that the metal ferrule between the upper and lower barrel sections not only strengthens the barrel at this point but the 10 flange i2 protects the proximal ends of the sections from chipping.

There has thus been provided a simple and eiiicient device of the kind described and for the purposes specied. 15

It is obvious that changes may be made in the form and construction of the invention without departing from the material principles involved. it is not, therefore, desired to confine the invention to the exact form herein shown and described but vit is desired to include all such as come within the scope of the appended claims.

The present application is a continuation in part of application Serial Number 37,089, filed August 20, 1935, said application being a contin uation in part of application Serial Number 733,524, led July 2, 1934.

The anti-friction washer herein disclosed, is claimed in -applicants co-pending application Serial Number 172,245 led November 1, 1937, said application being a continuation in part of application Serial Number '733,524 led July 2, 1934.

What is claimed, is: v

l. In an article of the class described, a barrel consisting of an upper and a lower part., at least one of said barrel parts being of a thermoplastic material prone to chipping, a metal ferrule fitted within one of said parts and projecting therefrom, said ferrule protecting the parts from chipping, means for detachably engaging the other part of said barrel to the projecting part of said ferrule, said barrel having at least one part sufficiently transparent for observation of the interior, and means spaced from the barrel and located therewithin to contain writing material observable through the said part of the barrel, the upper portion thereof being of a substantial length so as to permit easy reinoval of exposed writing material when the upper l, barrel portion is removed.

A pencil of the character described comprising a barrel, a lead-moving mechanism located in said barrel and rotative therein, said lead-moving mechanism being spaced from the inner surface of the barrel whereby an annular lead-storing chamber is provided between the lead-moving mechanism and the barrel, an actuating member engaging the lead-moving mech.- anism and extending out of the rear end of the barrel for manual engagement and rotation, a closure member surrounding the actuating member and mounted freely thereon and preventing movement thereof longitudinally of the barrel, said closure member having means for removably engaging the rear end of the barrel.

3. A pencil of the character described comprising, a barrel, a lead-moving mechanism located in said barrel and rotative therein, an actuating member fitted over the lead-moving mechanism and engaging the same to rotate it. a closure member having means for removably engaging the rear end of the barrel, said closure member being freely rotatable on the actuating member but preventing movement of the actuating memlals' beriangitudinauy ofthe barrer the actuating 'member' having a part extending beyond the closure memberfor manual engagement 'and-rotation to rotate the lead-moving mechanism.

'\4.'A pencilof the character'vde'scribed comv`prisin'g, a barrel, a lead-moving mechanism located vwithinsaid-barrel and rotative therein, Said lead-moving mechanism being spaced'f'irom the of the barrel vvformanual engagement; and means for preventing movement of the actuating member' longitudinally of the barrel whilepermitting rotative movement thereof, said means comprising a' closure member threaded into'the rear end o'flthe barrel and surrounding the actuating member..v l

l 5.1 A pencil of the character described comprising, a tubular barreLlead-moving mechanism loi cated in' said barrel'androtativetherein, said lmechanism including a spiral member centrally positioned within the barrel'andextending' therethrough for the greater portion of theilength of the barrel,y said spiralrnember being spaced from `the inner-surface of thev barrel whereby an annular lead-storing chamber is provided between saidl spiral member and the barrel, an'elongated `grooved tubular lead-separator surrounding the spiral member and situated in the lead-storing' chamber, aiclosure'member for` the rearend of ythe lbarrel comprising a plug 4portion-threaded into lthe end of the b'arrel'fand arotatable part secured to and rotatable vwithin the plugportion,v

said rotatable parthaving .a portion extending intothe barrel within the lead separator and engaging the spiral member, saidrotatable` part also having a portion projecting beyond Athe Aend of the barrel `for manual engagement 'and rotation.

6.v A pencil of the* characterfdescribed, comk `prising, a tubular barrel,I lead-moving mechanism located in' said barrelv and rotative therein, said lmechanism including a spiral member extending through the barrel for the greater portion V'of the lengthr of thebarrel, said spiral member being kspaced from the inner Asurface Vofthe .barrelA whereby an annular lead-storing chamber is provided between saidfspiral member and the barrel, an elongatedA grooved tubular lead-separatorfsubstantially as long asthe spiral member'. surroundling the spiral member and situated ,invl the leadseparator and fitting over the endAportio-n of the spiral member, said rotatable part also having an eraser-holding part projecting beyond the end of the barrel for manual rotation. i l

'7. Ina pencil of the character described, a

barrel, a closure member for the rear end of the v same comprising a threaded plug, a bushingrotatably mounted within said plug and held against axial movement therein,l said bushing projecting beyond the end of the barrel. and provided with an eraser holding recess, and a sleeve portion onl said bushing projecting into the barrel and provided with ymeans for effecting a demeans locatedithe'rein.

8.\In a pencil o-f the' character described,- a

tach'able if engagement with the f lead-propelling barrel,l lead-propelling .means located within the barreLa closure'member'threaded into the rear l end of the barrel, an actuating member rotatabljT mounted within the closure member, and means on one end of the actuating member and located i within thev barrel for coupling with the leadpropelling means to rotate the same upon manual rotation of the actuating member.

9.'In a pencil of thecharacter described, a barrel, a grooved llead-separator of tubular formation non-rotatively- .heldl- Within the barrel, a lead-propelling mechanism extending through the lead-separator and rotatable within the same, a`

said ferrule, vand means spaced from the-barrel `and located therewithin tovcontain writing material, the upper part of said barrel being of a substantial length so as to permit easy removal of exposed VWriting material when the upper barrel part is detached from the lower part.

1l. In a pencil of the character described, a barrelconsisting of an upper and lower part, means to removably connect the, upper and -lower parts of said barrel, 'leadpropelling Ameans .located within the barrel, al `closure member in .the rear'end of the upper barrel part, an actuating member rotatably mounted within the vclosure member and means onv one end of the actuating member and locatedwithin the barrel :for coupling with the lead propelling means toroltate the same upon manual rotation of the actuatingl member. i

.12. In a pencil of the character described, a barrel consistingv of an upper and lower part, means to removably connect thev upper and lower parts of vsaid, barrel; said barrel having at least one part sufliciently transparent for observation ofthe interior, lead propelling means'located within the barrel, a closure memberin lthe rear` end of the upper barrel part, an actuatingr member rotatably mountedwithin the closure member and means onone end` ofthe actuating member for coupling'withthe lead propellingmeans to rotate ythe vsame upon manual rotation of the actuating' member. l

13. In a pencil of the character described,` a barrel consisting of an upper and lower part,

means to removably connect the upper and lower parts of said barrel, said barrel having at least one part sufficiently transparent for observation of the interior, a grooved lead separator of tubular formation within said barrel, a lead propelling mechanism extending through the lead `separator and rotatable Within the same, a closure plug fitted into the rear end'of the barrel, and an actuating member rotatably mounted Vin the closure plug and having a part extending into mechanism within the lead separator.

14. In a pencil of the character' described, a

barrel consisting of an upper and lower part,

a ferrule'tted withinone of rsaid parts and' prolli , .70 the barrel and tted onthe lead propelling y jecting therefrom, means for detachably engaging the other part of said barrel to the projecting part of said ferrule, said barrel having at least one vpart suciently transparent for observation of the interior, lead propelling means located within the barrel, a closure member in the rear end of the barrel, an actuating member rotatably mounted within the closure member, and means on one end of the actuating member and located within the barrel for coupling with the lead propelling means to rotate tbe same upon manual rotation of the actuating member.

15. In a pencil of the character described, a barrel consisting of an upper and lower part, a ferrule tted `within one of said parts and projecting therefrom, means for detachably engaging the other part of said barrel to the projecting part of the ferrule, a lead separator in said barrel and forming therewith an annular lead storage chamber, said barrel having at least one part suiliciently transparent for observation of the leads present in said separator, lead propelling means located Within the barrel, a closure member tted in the rear end of the barrel, an actuating member rotatably mounted within the closure member and means on one end of the actuating member and located within the barrel for coupling with the lead propelling means to rotate the same upon manual rotation of the actuating member.

16. In a pencilof the character describedy a barrel consisting of an upper and lower part, a ferrule tted within one of said parts and pro jecting therefrom, means for detachably engaging the other part of said barrel to the projecting part of said ferrule, a lead separator within said barrel and forming therewith an annular lead storage chamber, said barrel having at least one part suliciently transparent for observation of leads present in the storage chamber, lead propelling means within the barrel, a washer fitted adjacent the lower end of the barrel lbetween the barrel and the lead propelling means to support the lower ends of the leads, a closure member in the rear end of the barrel, an actuating mem ber rotatably mounted within the closure member, and means on one end of the actuating member for coupling with the lead propelling means to rotate the same upon manual rotation of the actuating member.

17. In a pencil of the character described, a barrel, lead propelling means located within the barrel, a closure member fitted into the rear end of the barrel, an actuating member rotatably mounted within the closure member, and means on one end lof the actuating member for coupling with the lead propelling means to rotate the same upon manual rotation of the actuating member.

18. In an article of `the class described, a writing material-containing magazine, a barrel about said magazine consisting of an upper and a lower part, at least one of said barrel parts being of a thermo-plastic material prone to chipping, a metal ferrule fitted within one of said parts and projecting therefrom, said ferrule protecting the parts from chipping, and means for detachably engaging the other part of said barrel to the projecting part of said ferrule, one of said barrel portions being of a substantial length so as to permit easy removal of exposed writing material when said barrel part is detached.

19. In an article of the class described, a leadv containing magazine, a barrel consisting of an upper and a lower part, at least one of said barrel parts being of a thermoplastic material prone to chipping, a metal ferrule fitted within one of said parts and projecting therefrom, said ferrule protecting the parts from chipping, means for detachably engaging the other part or' said barrel to the projecting part of said ferrule and a flange on the exterior of said ferrule separating theupper and lower parts of said barrel, the upper part of said barrel being of a substantial length so as to permit easy removal of exposed leads when the upper barrel portion is detached and removed from the lower barrel portion.

20. In a pencil of the character describedfa barrel consisting of an upperand a lower part made of a plastic material prone to chipping, a ferrule fitted within the end of one of said parts, projecting therefrom, and detachably engaging the end of the other part of said barrel to strengthen and protect the ends from chipping, lead propelling means in said barrel, a closure member in the rear of the upper barrel, an actuatingmember rotatably mounted within the closure member and means on one end of the actuating member and located within the barrel for coupling with the lead propelling means to rotate the same upon manual rotation of the actuating member.

21. In a pencil of the character described, a

barrel consisting of an upper and a lower part sf made of a plastic material prone to chipping, a ferrule tted within the end of one of said parts projecting therefrom and detachably engaging the end of the other part of said barrel to strengthen and protect the ends from chipping. lead propelling means in said barrel, a metalvferrule fitted in the rear end of the upper barrel. an actuating member rotatably mounted within said metal errule, and means on one end of the actuating member and located within the barrel for coupling with the lead propelling means to rotate the same from manual rotation of the actuating member.

DAVID KAHN. 

